Dahau nvr not registering all cameras?

n3wb

Having a problem with a Dahau a NVR that will not register a couple of my older cameras. They did work until I upgraded the firmware on the NVR so I went back to the previous version of firmware. I included some screenshots of both NVR and camera config. pages.

NVR information page

Camera config. on NVR

NVR camera config page showing camera not connected....note it is detecting the model number under "TYPE".

Camera config. page .

Camera Config page with port numbers.

Another camera config page.

With IP address:

General Camera Information:

These cameras are about 6 years old; there may be newer firmware available for the cameras but I am hesitant to upgrade the firmware because the manufactures webpage wants to make sure that the camera version is above a 4 but I cannot read the sticker on the camera due to sun and weather fading.

Any place I can get Dahau NVR firmware? I tried older versions but it will not accept the firmware upload.